Process of producing patterns on plated knitting and the corresponding product



J. MAHLER PROCESS OF PRODUCING PATTERNS ON PLATED KNITTING AND THE June24, 1930.

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m f il Patented June 24, 1930 UNITED STATES PATENTl OFFICE JOSEF MAHLER,OF NEMECKY BROD, CZECHOSLOVAKIA, ASSIGNOR T0 FIDELITY MACHINE COMPANY,OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF DELAWARE PROCESS OFPRODUCING PATTERNS ON PLATED KNITTING AND THE CORRESPONDING PRODUCTApplication filed October 10, 1927, Serial No.

It is known in connection with Woven fabrics to produce patterns by aprocess of carbonization wherein part of the texture is destroyed bymeans of corrosive agents.

The present invention consists in applying the above process to platedstockings or other plated knitting, the two'web portions being made ofdiHerent kinds of materials such as cotton and Wool so that a patterningcan subsequently be produced by applying to the top surface, forinstance by printing, a corrosive which only attacks the plating andleaves the ground Work to appear through the latter.

In this manner a Jacquard effect can be produced by very simple andinexpensive means.

By the present process, it is possible to obi tain a design outlined bya sharply defined line which will follow a predetermined configurationirrespective of the outline of the individual stitches of the foundationfabric. Designs have been knit into t-he fabric by means of plating, butit has never been possible heretofore to produce a design in a knittedfabric in which the outline of the design will follow a sharply definedline, for, of necessity, the knitted design is defined by the outlinesof the individual stitches of the foundation fabric upon which theplating stitches are laid, the plating stitches assuming the same formas that of the underlying foundation stitches. With the presentinvention, however, if desired, the outline of the design may be made tocut across the plating stitches, a portion of the stitch being removedWhile the remaining portion constitutes a part of the sharply definedline.

For the etching out ofthe cotton, the pattern is printed with sulphuricacid. A solution of caustic soda may be used for etching out the Wool.

In the accompanying drawing, Figures 1 and 2 respectively illustratepieces of plated knit goods 1, having areas 2 of predetermined outlinein which the plating has been removed, in accordance with the processabove set forth, leaving the groundwork 3 exposed to view. In Figure 2,the outlines 4 and 5 of the areas 2 are shown as cutting across theplated stitches 6, thereby sharplyf defining 225,402, and inCzechoslovakia .Tuly 1, 1927.

the outlines of the plated areas 7 irrespective of the outlines of theindividual stitches of which the fabric is composed.

I claim:

l. A process of producing patterns on plated knitting consisting informing the plating and the ground Work out of different materials, andprinting the pattern on the knitting with a corrosive agent adapted todestroy the plating material Without attacking the ground work.

2. A process of producing patterns on plated knitting consisting informing the ground work out of wool and the plating out of cotton, andprinting the pattern on the knitting with sulphuric acid.

3. The process of producing designs on plated knitting, outlined by asharply defined line following a predetermined configurationirrespective of the outlines of the individual stitches of thefoundation fabric, the ground Work 0f the plated knitting being of onematerial and the plating of another material which comprises exposing aportion of the plated knitting to the action of a corrosive agentadapted to destroy the plating in predetermined areas according to thedesign desired without attacking the ground work or the plating of otherareas, allowing the corrosive agent to 4act upon and destroy thesusceptible plating material in t-he predetermined areas to which it isapplied, and thereafter freeing the fabric of the corrosive agent.

4. A process of producing patterns on plated knitting, the groundworkbeing of one material and the plating of another material, whichcomprises exposing a portion of tbe plating to the action of a co1'-rosive agent adapted to destroy the plating in predetermined areasaccording to the design desired without attacking the groundwork,allowing the corrosive agent to act upon and destroy the susceptibleplating material in the predetermined areas to whichit is applied, andthereafter freeing the fabric of the corrosive agent.

5. A plated knitted fabric, the plating of which is of one materialwhile the groundwork is of another material having a design formedthereon, the plating having been removed in predetermined areas by acorrosive agent which destroyed the plating Without attacking thegroundwork, the groundwork appearing through the plating in the saidpredetermined areas to form the design.

6. A plated knitted fabric, the plating of which is of one materialWhile the groundwork is of another material having a design 10 thereonoutlined by a sharply deined line following a predeterminedconfiguration irrespective of the outlines of the individual stitches ofthe foundation fabric, the plating having been removed in predeterminedareas 15 by a corrosive agent which destroyed the plating withoutattacking the groundwork, the groundwork appearing through the platf ingin the said predetermined areas to form the design.

o 7. A plated knitted fabric, the plating of which is of one materialwhile the groundwork is of another material having a design formedthereon, the plating having been re moved in predetermined areas by acorrosive 5 agent which destroyed the plating without attacking thegroundwork to form a predetermined design.

JOSEF MAHLER.

